Why did the english establish a colony on roanoke island

Lost Colony also classified as the Roanoke Colony, was the first attempt at ascertaining a permanent English foundation in North America. It was installed in 1585 on Roanoke Island, North Carolina, United States.

England's Sir Walter Raleigh attempted to impassioned to the Roanoke Colonies who wanted to initiate a persistent North American adaptation with the ascertainment of plundering Spanish shipping, mining for gold and silver, classifying an entrance to the Pacific Ocean, and Christianize the Indians.

a.   it resulted in widespread unemployment.

b) race riots in several cities